CN116708613B

CN116708613B - Foldable mechanism and foldable terminal

Info

Publication number: CN116708613B
Application number: CN202211138192.3A
Authority: CN
Inventors: 黄健; 陈瑞豪; 董绍洪
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2024-04-12
Anticipated expiration: 2042-09-19
Also published as: CN116708613A

Abstract

The application provides a folding mechanism and a folding terminal, which are used for simplifying the structure of the folding mechanism and realizing the lightweight design of the folding terminal. The foldable mechanism comprises a base, a synchronous sliding block, a first synchronous swing arm and a second synchronous swing arm. The synchronous slide block is arranged on the base and can slide relative to the base. The first sliding surface and the second sliding surface of the synchronous slide block are positioned on two opposite sides of the synchronous slide block and can rotate relative to the synchronous slide block. The rotating part of the first synchronous swing arm rotates to be connected with the base, and is in sliding connection with the synchronous sliding block. The first spiral surface of the rotating part in the first synchronous swing arm is contacted with the first sliding surface. The rotating part of the second synchronous swing arm rotates to be connected with the base, and is in sliding connection with the synchronous sliding block. The second spiral surface of the rotating part in the second synchronous swing arm is contacted with the second sliding surface. The rotating direction of the rotating part of the first synchronous swing arm relative to the base is opposite to the rotating direction of the rotating part of the second synchronous swing arm relative to the base.

Description

Foldable mechanism and foldable terminal

Technical Field

The application relates to the technical field of foldable terminals, in particular to a foldable mechanism and a foldable terminal.

Background

In recent years, as the technology of flexible display screens is mature, foldable terminals are favored by users because of the advantages of large screens, portability and the like. At present, a foldable terminal often adopts a foldable mechanism to realize folding and unfolding, and synchronous rotation is realized by utilizing a synchronous component in the foldable mechanism, so that the symmetry of the flexible display screen in the folding and unfolding processes is improved, and the use experience of consumers is improved. However, the existing synchronization assembly often requires a large number of parts to fold and unfold, resulting in a complex structure of the foldable mechanism, which is disadvantageous for the lightweight design of the foldable terminal.

Disclosure of Invention

The application provides a folding mechanism and a folding terminal, which are used for simplifying the structure of the folding mechanism and realizing the lightweight design of the folding terminal.

In a first aspect, the present application provides a foldable mechanism comprising a base and a synchronizing assembly mounted to the base. The synchronous assembly comprises a synchronous sliding block, a first synchronous swing arm and a second synchronous swing arm. The synchronous slide block is arranged on the base and can slide relative to the base, and comprises a first sliding surface and a second sliding surface which are positioned on two opposite sides of the synchronous slide block and can rotate relative to the synchronous slide block.

The rotating part of the first synchronous swing arm rotates to be connected with the base, and is in sliding connection with the synchronous sliding block. The rotating part of the first synchronous swing arm comprises a first spiral surface, and the first spiral surface is spirally arranged around the rotating center of the rotating part of the first synchronous swing arm and is in contact with the first sliding surface.

The rotating part of the second synchronous swing arm rotates to be connected with the base, and is in sliding connection with the synchronous sliding block. The rotating part of the second synchronous swing arm comprises a second spiral surface, and the second spiral surface is spirally arranged around the rotating center of the rotating part of the second synchronous swing arm and is in contact with the second sliding surface.

The rotating direction of the rotating part of the first synchronous swing arm relative to the base is opposite to the rotating direction of the rotating part of the second synchronous swing arm relative to the base.

In the synchronous component of the foldable mechanism, the rotating part of the first synchronous swing arm and the rotating part of the second synchronous swing arm are both in sliding connection with the synchronous sliding block, the first sliding surface of the synchronous sliding block is matched with the first spiral surface of the first synchronous swing arm, the second sliding surface of the synchronous sliding block is matched with the second spiral surface of the second synchronous swing arm, the rotating part of the first synchronous swing arm and the rotating part of the second synchronous swing arm are converted into the linear movement of the synchronous sliding block relative to the base, so that the synchronous rotation of the foldable mechanism is realized.

In one embodiment, the synchronous slide block comprises a slide member and a first rolling member, wherein the slide member is arranged on the base and can slide relative to the base, the first rolling member is arranged on one side of the slide member and can rotate relative to the slide member, and the outer surface of the first rolling member forms a first sliding surface;

the rotating part of the first synchronous swing arm is provided with a first spiral groove, the first spiral groove is spirally arranged around the rotating center of the rotating part of the first synchronous swing arm, and the groove wall surface of the first spiral groove forms a first spiral surface;

wherein, first rolling element slidable mounting is in first helicla flute.

In the synchronous component of the foldable mechanism, the first rolling piece of the synchronous sliding block and the first spiral groove of the first synchronous swing arm form a cam pair, and the rotation part of the first synchronous swing arm is converted into linear movement of the synchronous sliding block relative to the base, so that synchronous rotation of the foldable mechanism is realized. Because the first rolling element can rotate relative to the sliding element, the rolling element can convert the existing sliding friction into moving friction, so that the abrasion between the first rolling element and the groove wall of the first spiral groove is reduced, and the synchronous precision of the synchronous assembly is guaranteed.

In one embodiment, the synchronous slide block comprises a slide member and two first rolling members, wherein the slide member is arranged on the base and can slide relative to the base, the rolling members are arranged on the slide member and can rotate relative to the slide member, the two first rolling members are arranged on one side of the slide member at intervals, and the outer surfaces of the two first rolling members form a first sliding surface;

The rotating part of the first synchronous swing arm is provided with a first spiral bulge, the first spiral bulge is arranged in a spiral mode around the rotating center of the rotating part of the first synchronous swing arm, the first spiral bulge comprises two first spiral side surfaces, the two first spiral side surfaces are arranged in a back-to-back mode, and the two first spiral side surfaces form a first spiral surface;

the first spiral protrusions are connected between the two first rolling elements in a sliding mode, and the two first spiral side faces are respectively in contact with the outer surfaces of the two first rolling elements.

In the synchronous component of the foldable mechanism, two first rolling elements of the synchronous sliding block and the first spiral protrusions of the first synchronous swing arm are utilized to form a cam pair, the rotation of the rotation part of the first synchronous swing arm relative to the base is converted into the linear movement of the synchronous sliding block relative to the base, and the synchronous rotation of the foldable mechanism is realized. Because the two first rolling elements can rotate relative to the sliding element, the rolling elements can convert the existing sliding friction into moving friction, so that the abrasion between the first rolling elements and the groove walls of the first spiral grooves is reduced, and the synchronous precision of the synchronous assembly is guaranteed.

In one embodiment, the synchronous slide block further comprises a second rolling element, the second rolling element is arranged on the other side of the sliding element and can rotate relative to the sliding element, and a second sliding surface is formed on the outer surface of the second rolling element;

The rotating part of the second synchronous swing arm is provided with a second spiral groove, the second spiral groove is spirally arranged around the rotating center of the rotating part of the second synchronous swing arm, and the groove wall surface of the second spiral groove forms a second spiral surface;

wherein, the second rolling element is installed in the second spiral groove in a sliding way.

In the synchronous component of the foldable mechanism, the rotation part of the second synchronous swing arm is converted into the linear movement of the synchronous slide block relative to the base by utilizing the second rolling piece of the synchronous slide block and the second spiral groove of the second synchronous swing arm to form a cam pair, so that the synchronous rotation of the foldable mechanism is realized. The second rolling element can rotate relative to the sliding element, and the rolling element can convert the existing sliding friction into moving friction, so that abrasion between the second rolling element and the groove wall of the second spiral groove is reduced, and the synchronous precision of the synchronous assembly is guaranteed.

In one embodiment, the synchronous slide block further comprises two second rolling elements, the two second rolling elements are arranged on the other side of the sliding element at intervals and can rotate relative to the sliding element, and the outer surfaces of the two second rolling elements form a second sliding surface;

the rotating part of the second synchronous swing arm is provided with a second spiral bulge, the second spiral bulge is arranged in a spiral way around the rotating center of the rotating part of the second synchronous swing arm, the second spiral bulge comprises two second spiral side surfaces, the two second spiral side surfaces are arranged in a way of being opposite to each other, and the two second spiral side surfaces form a second spiral surface;

The second spiral protrusions are connected between the two second rolling elements in a sliding mode, and the two second spiral side faces are respectively in contact with the outer surfaces of the two second rolling elements.

In one embodiment, the sliding member is provided with a first mounting column and a second mounting column, the first mounting column and the second mounting column are respectively located at two opposite sides of the sliding member, the first rolling member is sleeved on the first mounting column and can rotate relative to the first mounting column, so that the first rolling member can rotate relative to the sliding member, and the second rolling member is sleeved on the second mounting column and can rotate relative to the second mounting column, so that the second rolling member can rotate relative to the sliding member.

In one embodiment, the width of the first rolling member is constant along a direction in which the first rolling member approaches the sliding member toward the first rolling member away from the sliding member. The first rolling piece can be cylindrical, and is simple in structure and convenient to process.

Or, along the direction that the first rolling element is close to the sliding element and the first rolling element is far away from the sliding element, the width of the first rolling element gradually becomes larger, wherein the first rolling element can be in a truncated cone shape, and the transmission precision of the synchronous assembly is improved.

Alternatively, the outer surface of the first rolling member is spherical. The first rolling element can be hemispherical, so that the contact area between the first rolling element and the rotating part of the first synchronous swing arm is increased, and the pressure between the first rolling element and the first synchronous swing arm is reduced.

In one embodiment, when the rotating part of the first synchronous swing arm rotates relative to the base, the first spiral surface slides relative to the first sliding surface, the rotating part of the first synchronous swing arm drives the synchronous sliding block to slide relative to the base, the second sliding surface slides relative to the second spiral surface, and the synchronous sliding block drives the rotating part of the second synchronous swing arm to rotate relative to the base, so that synchronous rotation between the first synchronous swing arm and the second synchronous swing arm is realized.

When the rotating part of the second synchronous swing arm rotates relative to the base, the second spiral surface slides relative to the second sliding surface, the rotating part of the second synchronous swing arm drives the synchronous sliding block to slide relative to the base, the first sliding surface slides relative to the first spiral surface, and the synchronous sliding block drives the rotating part of the first synchronous swing arm to rotate relative to the base, so that synchronous rotation between the first synchronous swing arm and the second synchronous swing arm is realized.

In one embodiment, the base comprises a shaft cover, a first rotating shaft and a second rotating shaft, wherein the shaft cover is provided with a mounting groove, and the first rotating shaft and the second rotating shaft are both mounted in the mounting groove and are arranged in parallel and at intervals.

The synchronous slide block is sleeved on the first rotating shaft and the second rotating shaft and can slide relative to the first rotating shaft and the second rotating shaft so as to realize sliding connection between the synchronous slide block and the base. The first sliding surface is positioned on one side of the synchronous sliding block, which is close to the first rotating shaft, and the second sliding surface is positioned on one side of the synchronous sliding block, which is close to the second rotating shaft.

The rotating part of the first synchronous swing arm is sleeved on the first rotating shaft and can rotate relative to the first rotating shaft so as to realize the rotating connection between the rotating part of the first synchronous swing arm and the base. The rotating part of the second synchronous swing arm is sleeved on the second rotating shaft and can rotate relative to the second rotating shaft so as to realize the rotating connection between the rotating part of the second synchronous swing arm and the base.

In one embodiment, the foldable mechanism further comprises a connection assembly mounted to the base. The connecting assembly comprises a first fixing frame and a second fixing frame, the sliding part of the first synchronous swing arm is connected with the first fixing frame in a sliding mode, and the sliding part of the second synchronous swing arm is connected with the second fixing frame in a sliding mode.

When the first fixing frame rotates relative to the base, the sliding part of the first synchronous swing arm is driven to slide relative to the first fixing frame, the rotating part of the first synchronous swing arm rotates relative to the base, the first synchronous swing arm drives the synchronous sliding block to slide relative to the base, the synchronous sliding block drives the rotating part of the second synchronous swing arm to rotate relative to the base, the sliding part of the second synchronous swing arm slides relative to the second fixing frame, and the second fixing frame is driven to rotate relative to the base, so that synchronous rotation between the first fixing frame and the second fixing frame is realized.

When the second fixing frame rotates relative to the base, the sliding part of the second synchronous swing arm is driven to slide relative to the second fixing frame, the rotating part of the second synchronous swing arm rotates relative to the base, the second synchronous swing arm drives the synchronous sliding block to slide relative to the base, the synchronous sliding block drives the rotating part of the first synchronous swing arm to rotate relative to the base, the sliding part of the first synchronous swing arm slides relative to the first fixing frame, and then the first fixing frame is driven to rotate relative to the base, so that synchronous rotation between the first fixing frame and the second fixing frame is realized.

In one embodiment, the first fixing frame is provided with a first sliding hole, and the sliding part of the first synchronous swing arm is penetrated through the first sliding hole and can slide relative to the first fixing frame in the first sliding hole so as to realize sliding connection between the sliding part of the first synchronous swing arm and the first fixing frame;

the second fixing frame is provided with a second sliding hole, and the sliding part of the second synchronous swing arm is arranged in the second sliding hole in a penetrating way and can slide relative to the second fixing frame in the second sliding hole so as to realize sliding connection between the sliding part of the second synchronous swing arm and the second fixing frame.

In one embodiment, the connection assembly of the foldable mechanism further comprises a first main swing arm, a first auxiliary swing arm, a second main swing arm and a second auxiliary swing arm.

The rotating part of the first main swing arm is rotationally connected with the first fixing frame, the sliding part of the first main swing arm slides and rotates to be connected with the base, the sliding part of the first auxiliary swing arm is slidingly connected with the first fixing frame, and the rotating part of the first auxiliary swing arm rotates to be connected with the base.

When the first fixing frame rotates relative to the base, the first fixing frame drives the rotating part of the first main swing arm to rotate relative to the first fixing frame, the sliding part of the first main swing arm slides and rotates relative to the base, the first fixing frame also drives the sliding part of the first auxiliary swing arm to slide relative to the first fixing frame, and the rotating part of the first auxiliary swing arm rotates relative to the base.

The rotating part of the second main swing arm is rotationally connected with the second fixing frame, the sliding part of the second main swing arm slides and rotates to be connected with the base, the sliding part of the second auxiliary swing arm is slidingly connected with the second fixing frame, and the rotating part of the second auxiliary swing arm rotates to be connected with the base.

When the second fixing frame rotates relative to the base, the second fixing frame drives the rotating part of the second main swing arm to rotate relative to the second fixing frame, the sliding part of the second main swing arm slides and rotates relative to the base, the second fixing frame also drives the sliding part of the second auxiliary swing arm to slide relative to the second fixing frame, and the rotating part of the second auxiliary swing arm rotates relative to the base.

In one embodiment, the sliding part of the first auxiliary swing arm is further rotatably connected with the first fixing frame, and the rotating part of the first auxiliary swing arm is further slidably connected with the base. When the first fixing frame rotates relative to the base, the first fixing frame drives the sliding part of the first auxiliary swing arm to slide and rotate relative to the first fixing frame, and the rotating part of the first auxiliary swing arm slides and rotates relative to the base.

The sliding part of the second auxiliary swing arm is also rotationally connected with the second fixing frame, and the rotating part of the second auxiliary swing arm is also rotationally connected with the base. When the second fixing frame rotates relative to the base, the second fixing frame drives the sliding part of the second auxiliary swing arm to slide and rotate relative to the second fixing frame, and the rotating part of the second auxiliary swing arm slides and rotates relative to the base.

In one embodiment, the foldable mechanism further comprises a damping assembly mounted to the base. The damping assembly comprises a damping piece, a first damping swing arm and a second damping swing arm. The damping piece is installed on the base. The rotating part of the first damping swing arm is rotationally connected with the damping piece, and the sliding part of the first damping swing arm slides and is rotationally connected with the first fixing frame. The rotating part of the second damping swing arm is rotationally connected with the damping piece, and the sliding part of the second damping swing arm slides and is rotationally connected with the second fixing frame.

When the first fixing frame rotates relative to the base, the sliding part of the first damping swing arm slides and rotates relative to the first fixing frame, and the rotating part of the first damping swing arm rotates relative to the damping piece. When the second fixing frame rotates relative to the base, the sliding part of the second damping swing arm slides and rotates relative to the second fixing frame, and the rotating part of the second damping swing arm rotates relative to the damping piece. When the rotating parts of the first damping swing arm and the second damping swing arm rotate relative to the damping piece, the damping piece provides damping force, and a user can obviously feel the damping force when using the foldable terminal, such as when the foldable terminal is in a folded state or a flattened state and when the foldable terminal is switched between the folded state and the flattened state, and the user can experience better handfeel, so that the use experience of the user is improved.

In a second aspect, the present application provides a foldable terminal, a first housing, a second housing, and any one of the above foldable mechanisms, the foldable mechanism connecting the first housing and the second housing.

In the folding mechanism of the folding terminal, the rotating part of the first synchronous swing arm and the rotating part of the second synchronous swing arm are both in sliding connection with the synchronous sliding block, the first sliding surface of the synchronous sliding block is matched with the first spiral surface of the first synchronous swing arm, the second sliding surface of the synchronous sliding block is matched with the second spiral surface of the second synchronous swing arm, the rotating part of the first synchronous swing arm and the rotating part of the second synchronous swing arm are converted into linear movement of the synchronous sliding block relative to the base, so that synchronous rotation of the folding mechanism is realized, compared with the existing synchronous assembly which utilizes gears to realize synchronization, the number of components of the synchronous assembly is reduced, the structure of the folding mechanism is simplified, the lightweight design of the folding terminal is realized, and the folding terminal is facilitated to be realized.

In one embodiment, the foldable terminal further comprises a display screen, the display screen comprises a first display portion, a second display portion and a foldable portion, the foldable portion is connected between the first display portion and the second display portion, the first display portion is mounted on the first shell, the second display portion is mounted on the second shell, and the foldable portion is arranged opposite to the foldable mechanism.

In the foldable terminal shown in the application, synchronous transmission of the foldable mechanism is realized by utilizing the synchronous component, so that symmetry of the display screen in the folding and unfolding processes is improved, and use experience of consumers is improved.

Drawings

In order to more clearly describe the technical solutions of the embodiments of the present application, the following description will describe the drawings that are required to be used in the embodiments of the present application.

Fig. 1 is a schematic structural view of a first foldable terminal provided in an embodiment of the present application in one state;

fig. 2 is a schematic view of the foldable terminal shown in fig. 1 in a second state;

FIG. 3 is an exploded view of the foldable terminal of FIG. 2;

FIG. 4 is a schematic view of the structure of the foldable device in the foldable terminal shown in FIG. 3;

FIG. 5 is a schematic view of an exploded construction of the foldable device of FIG. 4;

FIG. 6 is a schematic view of the folding mechanism of the folding device of FIG. 5;

FIG. 7 is an exploded view of the folding mechanism of FIG. 6;

FIG. 8 is a schematic view of the base of the folding mechanism of FIG. 7;

FIG. 9 is a schematic view of the connection assembly of the foldable mechanism of FIG. 7;

FIG. 10 is a schematic view of the connection assembly of FIG. 9 at another angle;

FIG. 11 is a schematic view of the damping assembly of the folding mechanism of FIG. 7;

FIG. 12 is a schematic view of the synchronizing assembly of the folding mechanism of FIG. 7;

fig. 13 is a schematic structural diagram of a synchronization assembly of a foldable mechanism in a second foldable terminal according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a foldable terminal 1000 in one state according to an embodiment of the present application, and fig. 2 is a schematic structural diagram of the foldable terminal 1000 in a second state shown in fig. 1.

The foldable terminal 1000 can be a foldable electronic product such as a mobile phone, a tablet computer, a personal computer, a multimedia player, an electronic book reader, a notebook computer, a vehicle-mounted device, or a wearable device. In this embodiment, foldable terminal 1000 is a foldable mobile phone. That is, foldable terminal 1000 is a mobile phone that can be switched between a folded state and an unfolded state.

For convenience of description, the length direction of the foldable terminal 1000 shown in fig. 2 is defined as an X-axis direction, the length direction of the foldable terminal 1000 is defined as a Y-axis direction, the thickness direction of the foldable terminal 1000 is defined as a Z-axis direction, and the X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other. Illustratively, the axis of rotation of foldable terminal 1000 extends in a direction parallel to the Y-axis direction. That is, foldable terminal 1000 can be relatively unfolded or relatively folded about the Y-axis direction.

It should be noted that, in the embodiments of the present application, the definitions of the relative positional relationships, such as parallel and perpendicular, are all defined with respect to the current state of the art, and are not strictly defined in a mathematical sense, and a small deviation is allowed, both approximately parallel and approximately perpendicular. For example, a is parallel to B, meaning that a is parallel or approximately parallel to B, and the angle between a and B may be between 0 degrees and 10 degrees. For example, A is perpendicular to B, meaning that A is perpendicular or approximately perpendicular to B, and the included angle between A and B is between 80 degrees and 100 degrees.

The foldable terminal 1000 shown in fig. 1 is in a folded state, the foldable terminal 1000 has a smaller size along the X-axis direction, and the foldable terminal 1000 is convenient to carry. Foldable terminal 1000 is shown in fig. 2 in an unfolded state. Illustratively, the folding terminal 1000 shown in FIG. 2 has an unfolding angle α of 180 degrees. In other words, foldable terminal 1000 is shown in fig. 2 in a flattened state. At this time, the size of the foldable terminal 1000 in the X-axis direction is large, and the foldable terminal 1000 has a large display area. It should be noted that the angles illustrated in the embodiments of the present application allow for slight deviations. For example, an angle of deployment α of the foldable terminal 1000 shown in fig. 2 of 180 degrees means that α may be 180 degrees, or may be about 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, 190 degrees, etc. The angles illustrated hereinafter are to be understood identically.

It should be understood that foldable terminal 1000 shown in the embodiments of the present application is a terminal that can be folded once. In other embodiments, foldable terminal 1000 can also be a terminal that can be folded multiple times (more than two times). At this time, foldable terminal 1000 may include a plurality of sections, and two adjacent sections may be folded relatively close to each other until foldable terminal 1000 is in a folded state, and two adjacent sections may be unfolded relatively away from each other until foldable terminal 1000 is in an unfolded state.

Referring to fig. 3, fig. 3 is an exploded view of the foldable terminal 1000 shown in fig. 2.

Foldable terminal 1000 includes foldable device 100 and display 200, display 200 being mounted to foldable device 100. The display 200 includes a display surface (not shown) facing away from the foldable device 100 for displaying information such as text, images or video. In this embodiment, the display screen 200 includes a first display portion 210, a second display portion 220, and a foldable portion 230, the foldable portion 230 being connected between the first display portion 210 and the second display portion 220. Wherein the foldable portion 230 may be bent around the Y-axis direction.

As shown in fig. 1, when foldable terminal 1000 is in a folded state, foldable device 100 and display 200 are both in a folded state, first display portion 210 and second display portion 220 are disposed opposite to each other, and foldable portion 230 is folded. At this time, the exposed area of the display screen 200 is relatively small, so that the probability of damaging the display screen 200 can be greatly reduced, and effective protection of the display screen 200 can be realized.

As shown in fig. 2, when foldable terminal 1000 is in the flattened state, foldable device 100 and display screen 200 are both in the flattened state, first display portion 210 and second display portion 220 are relatively flattened, and foldable portion 230 is flattened without bending. At this time, the included angles between the first display portion 210, the second display portion 220 and the foldable portion 230 are all α, and the display screen 200 has a large-area display area, so as to implement large-screen display of the foldable terminal 1000, and improve the user experience.

It should be understood that foldable terminal 1000 in the embodiments of the present application is folded in an inward folding manner, and that display 200 is located inside foldable device 100 when foldable terminal 1000 is in the folded state. In other embodiments, foldable terminal 1000 can also be folded in an outward folding manner, with display 200 positioned outside of foldable device 100 when foldable terminal 1000 is in the folded state.

Referring to fig. 4 and 5 together, fig. 4 is a schematic structural view of a foldable device 100 in the foldable terminal 1000 shown in fig. 3, and fig. 5 is an exploded schematic structural view of the foldable device 100 shown in fig. 4.

The foldable device 100 includes a first housing 110, a second housing 120, and a foldable mechanism 130, the foldable mechanism 130 being connected between the first housing 110 and the second housing 120 to enable a rotational connection between the first housing 110 and the second housing 120. Specifically, the first housing 110 carries the first display portion 210, and the second housing 120 carries the second display portion 220. In other words, the first display portion 210 is mounted to the first housing 110, and the second display portion 220 is mounted to the second housing 120. Wherein the foldable mechanism 130 is disposed opposite the foldable portion 230.

The first housing 110 and the second housing 120 are relatively rotatable by the foldable mechanism 130 such that the foldable device 100 is switched between a folded state and an unfolded state. Specifically, the first housing 110 and the second housing 120 may be relatively rotated to a relative position to place the foldable device 100 in a folded state, as shown in fig. 1. At this time, the foldable mechanism 130 is in a folded state. First housing 110 and second housing 120 may also be relatively rotated to a relatively flattened state such that foldable terminal 1000 is in a flattened state, as shown in fig. 2. Illustratively, the angle between the first housing 110 and the second housing 120 is α. At this time, the foldable mechanism 130 is in a flattened state.

The first housing 110 is provided with a first receiving groove 1101, and the first receiving groove 1101 is located at a side of the first housing 110 facing the second housing 120. The opening of the first receiving groove 1101 is located at the top surface of the first housing 110. The first receiving groove 1101 is recessed from the top surface of the first housing 110 toward the bottom surface, and penetrates the right side surface of the first housing 110.

The second housing 120 and the first housing 110 are identical in structure and mirror symmetrical about the foldable mechanism 130. The second housing 120 is provided with a second receiving groove 1201, and the second receiving groove 1201 is located at a side of the second housing 120 facing the first housing 110. The opening of the second receiving groove 1201 is located at the top surface of the second housing 120. The second receiving groove 1201 is recessed from the top surface of the second housing 120 toward the bottom surface, and penetrates the second housing 120 toward the side surface of the first housing 110.

When the foldable device 100 is in the flattened state, that is, when the included angle between the first housing 110 and the second housing 120 is α, the first accommodating groove 1101 and the second accommodating groove 1201 enclose to form an accommodating space 1301. The foldable mechanism 130 is mounted in the housing space 1301. Wherein, the part of the foldable mechanism 130 is mounted in the first receiving groove 1101 of the first housing 110, and the part of the foldable mechanism 130 is mounted in the second receiving groove 1201 of the second housing 120.

It should be noted that, in the description of the foldable terminal 1000 of the present embodiment, terms such as "top", "bottom", "left", "right", "front" and "rear" are mainly described according to the display orientation of the foldable terminal 1000 in fig. 2, and do not limit the orientation of the foldable terminal 1000 in the practical application.

It should be appreciated that prior art folding mechanisms often required a synchronizing assembly comprising a plurality of structural members to achieve synchronized rotation of the folding mechanism. For example, the synchronous assembly can adopt the design of gear engagement transmission, four gear engagement transmissions are required to be arranged, and the synchronous transmission of the foldable mechanism is realized through the engagement between adjacent gears, however, the structure of the synchronous assembly is complex, the problem of insufficient strength such as broken teeth and the like easily caused by the small diameter of the gears is not beneficial to realizing the light weight and miniaturized design of the foldable terminal. Or, the synchronous component can adopt the design of spiral transmission, need set up the helicla flute in the pivot, set up the synchronizing block between two pivots, the synchronizing block is provided with the convex part, the convex part forms the spiral pair with the helicla flute, convert the rotary motion of pivot into the rectilinear motion of synchronizing block through the spiral pair, realize folding mechanism's synchronous transmission, however the contact surface of convex part and helicla flute is easy wearing and tearing, synchronous component's transmission precision loss is serious, folding mechanism's reliability of use has been reduced, and the cooperation size of convex part and helicla flute can't be adjusted, it is better to the machining precision requirement, be difficult to satisfy the economic nature requirement in the course of working.

Next, the structure of the foldable mechanism 130 in the foldable terminal 1000 shown in the embodiment of the present application will be described.

Referring to fig. 6 and 7, fig. 6 is a schematic structural view of the folding mechanism 130 in the folding device 100 shown in fig. 5, and fig. 7 is an exploded structural view of the folding mechanism 130 shown in fig. 6.

The collapsible mechanism 130 includes a base 10, a connection assembly 20, a damping assembly 30, and a synchronization assembly 40. The connection assembly 20, the damping assembly 30 and the synchronization assembly 40 are all mounted to the base 10 and are all foldable or unfoldable with respect to the base 10. The damping assembly 30 is slidably and rotatably coupled to the coupling assembly 20. The synchronizing assembly 40 is slidably coupled to the coupling assembly 20. Illustratively, the base 10 extends in the Y-axis direction.

When the foldable mechanism 130 is in the folded state, the connection assembly 20, the damping assembly 30 and the synchronization assembly 40 are all in the folded state. When the collapsible mechanism 130 is in the expanded state, the linkage assembly 20, the damping assembly 30, and the synchronization assembly 40 are all in the expanded state. During the process of switching the foldable mechanism 130 from the folded state to the unfolded state, the connection assembly 20, the damping assembly 30 and the synchronization assembly 40 are all switched from the folded state to the unfolded state. In the process of switching the foldable mechanism 130 from the unfolded state to the folded state, the connection assembly 20, the damping assembly 30 and the synchronization assembly 40 are all switched from the unfolded state to the folded state.

The connection assembly 20 includes a first mount 21, a second mount 22, a first main swing arm 23, a second main swing arm 24, a first sub swing arm 25, and a second sub swing arm 26. The first fixing frame 21 is located at one side of the base 10, and the second fixing frame 22 is located at the other side of the base 10. The first main swing arm 23 is rotatably connected to the first fixing frame 21, and slides and rotatably connected to the base 10. The second main swing arm 24 is rotatably connected to the second fixing frame 22, and is slidably and rotatably connected to the base 10. The first auxiliary swing arm 25 is slidably and rotatably coupled to the first fixing frame 21, and is slidably and rotatably coupled to the base 10. The second auxiliary swing arm 26 is slidably and rotatably connected to the second fixing frame 22, and is slidably and rotatably connected to the base 10.

In other embodiments, the first auxiliary swing arm 25 may be slidably connected to the first fixing frame 21, and/or the first auxiliary swing arm 25 may be rotatably connected to the base, and/or the second auxiliary swing arm 26 may be slidably connected to the second fixing frame 22, and/or the second auxiliary swing arm 26 may be rotatably connected to the base 10.

It should be understood that references to "and/or" in the examples of the present application are intended to mean both "and" or "cases. For example, a and/or B includes three cases where a only exists, B only exists, and a and B exist simultaneously, and the description of "and/or" will be understood identically hereinafter.

When the connection assembly 20 is switched between the folded state and the unfolded state, the rotating directions of the first fixing frame 21, the first main swing arm 23 and the first auxiliary swing arm 25 relative to the base 10 are the first directions, the rotating directions of the second fixing frame 22, the second main swing arm 24 and the second auxiliary swing arm 26 relative to the base 10 are the second directions, and the second directions are opposite to the first directions.

Illustratively, when the connection assembly 20 is switched from the folded state to the unfolded state, the first fixing frame 21, the first main swing arm 23 and the first auxiliary swing arm 25 rotate in the counterclockwise direction relative to the base 10, and the second fixing frame 22, the second main swing arm 24 and the second auxiliary swing arm 26 rotate in the clockwise direction relative to the base 10. When the connection assembly 20 is switched from the unfolded state to the folded state, the first main swing arm 23 and the first auxiliary swing arm 25 rotate in the clockwise direction relative to the base 10, and the second main swing arm 24 and the second auxiliary swing arm 26 rotate in the counterclockwise direction relative to the base 10.

In this embodiment, the connection assembly 20 is one. In other embodiments, there may be a plurality of connection assemblies 20, and the plurality of connection assemblies 20 may be arranged at intervals along the Y-axis direction, and the number of connection assemblies 20 is not particularly limited in this application. It should be noted that any two connection assemblies 20 may be the same or similar assemblies, symmetrical or partially symmetrical structures, or different structures. The basic structure of the various components of each connection assembly 20, the connection relationships between the components, and the connection relationships between the components and the components other than the assembly may be different in the detailed structure or positional arrangement of the various components with reference to the related designs of the connection assemblies 20 hereinafter. The first fixing frames 21 of the plurality of connection assemblies 20 may be independent structural members or may be a plurality of portions of an integral structural member. And/or, the second fixing frames 22 of the plurality of connection assemblies 20 may be independent structural members or may be a plurality of parts of an integral structural member.

The damping assembly 30 is slidably and rotatably coupled to both the first mount 21 and the second mount 22. The damping assembly 30 may provide a damping force during folding or unfolding of the connection assembly 20 relative to the base 10. During the process of using the foldable terminal 1000, for example, when the foldable terminal 1000 is in a folded state or a flattened state, and when the foldable terminal 1000 is switched between the folded state and the flattened state, the user can obviously feel the damping force provided by the damping component 30, and the user can experience better hand feeling, so that the use experience of the user is improved.

In the present embodiment, the damper assembly 30 includes a damper 31, a first damper swing arm 32, and a second damper swing arm 33. The damper 31 is mounted to the base 10. The first damping swing arm 32 is rotatably connected to the damping member 31, and slidably and rotatably connected to the first fixing frame 21. The second damping swing arm 33 is rotatably connected to the damping member 31 and slidably and rotatably connected to the second fixing frame 22.

It should be noted that, in the present embodiment, the damping assembly 30 is one. In other embodiments, the damping assemblies 30 may be plural, and the plural damping assemblies 30 may be arranged at intervals along the Y-axis direction, and the number of the damping assemblies 30 is not particularly limited in this application. It should be noted that any two damping assemblies 30 may be the same or similar assemblies, symmetrical or partially symmetrical structures, or different structures. The basic structure of the various components of each damping assembly 30, the connection between the components, and the connection between the components and the components other than the assembly may all be different in the detailed structure or positional arrangement of the various components with reference to the relevant designs of the damping assemblies 30 hereinafter.

The synchronizing assembly 40 is slidably coupled to both the first mount 21 and the second mount 22. The synchronizing assembly 40 can realize the synchronous rotation between the first fixing frame 21 and the second fixing frame 22 during the folding or unfolding process of the connecting assembly 20 relative to the base 10. The synchronous assembly 40 can realize synchronous transmission of the foldable mechanism 130 during the process of using the foldable terminal 1000, for example, when the foldable terminal 1000 is switched between a folded state and an unfolded state, so that the symmetry of the display screen 200 during the folding and unfolding processes is improved, and the use experience of consumers is improved.

In this embodiment, the synchronizing assembly 40 includes a synchronizing slider 41, a first synchronizing swing arm 42, and a second synchronizing swing arm 43. The synchronizing slide 41 is slidably mounted on the base 10. The first synchronous swing arm 42 is slidably connected with the synchronous slider 41 and is slidably connected with the first fixing frame 21. The second synchronous swing arm 43 is slidably connected with the synchronous slider 41 and is slidably connected with the second fixing frame 22.

In this embodiment, the synchronization component 40 is one. In other embodiments, the damping assembly 30 may have a plurality of damping assemblies 40 spaced apart from each other along the Y-axis, and the number of the damping assemblies 40 is not particularly limited in this application. It should be noted that any two synchronization components 40 may be the same or similar components, symmetrical or partially symmetrical structures, or different structures. The basic structure of each component, the connection relationship between components, and the connection relationship between components and components other than the assembly in each synchronization assembly 40 may be different in the detailed structure or the positional arrangement of each component with reference to the related design of the synchronization assembly 40 hereinafter.

Referring to fig. 7 and 8, fig. 8 is a schematic view of the base 10 of the foldable mechanism 130 shown in fig. 7.

In the present embodiment, the base 10 includes a shaft cover 11, a first rotation shaft 12, and a second rotation shaft 13, and both the first rotation shaft 12 and the second rotation shaft 13 are mounted to the shaft cover 11. Wherein, the first rotation shaft 12 and the second rotation shaft 13 are parallel to the Y-axis direction, and the first rotation shaft 12 and the second rotation shaft 13 are arranged at intervals along the X-axis direction.

The shaft cover 11 is provided with a sliding groove 111, and an opening of the sliding groove 111 is located on the top surface of the shaft cover 11. The slide groove 111 is recessed in a direction from the top surface to the bottom surface of the shaft cover 11 (negative Z-axis direction in the drawing). Wherein the sliding groove 111 is an arc-shaped groove. That is, the groove bottom wall surface of the slide groove 111 is an arc surface. Specifically, the sliding groove 111 includes two first groove side walls (not shown) that are spaced apart and disposed at intervals along the Y-axis direction. Each first slot sidewall is provided with a slider 14, the slider 14 extending from one first slot sidewall in the direction of the other first slot sidewall (the Y-axis direction in the drawing) and being spaced apart from the other first slot sidewall. The slider 14 is in an arc plate shape and is recessed toward the negative direction of the Z axis. That is, the top and bottom surfaces of the slider 14 are both arcuate surfaces and are both concave in the negative Z-axis direction. Illustratively, the axes of both sliders 14 are parallel to the Y-axis and coaxial.

It should be noted that, reference to "coaxial" in the embodiments of the present application means that extended lines of the axes coincide with each other. For example, the coaxial centers of a and B means that the extended line of the axis of a coincides with the extended line of the axis of B, and the description of "coaxial center" will be understood in the same manner.

In the present embodiment, there are four slide grooves 111, and the four slide grooves 111 are a first slide groove 112, a second slide groove 113, a third slide groove 114, and a fourth slide groove 115, respectively. Specifically, the first slide groove 112 and the third slide groove 114 are located on the left side of the shaft cover 11. The third sliding groove 114 is located at one side of the first sliding groove 112 facing the negative Y-axis direction, and is spaced apart from the first sliding groove 112. The second sliding groove 113 and the fourth sliding groove 115 are located on the right side of the shaft cover 11. The fourth sliding groove 115 is located at a side of the second sliding groove 113 facing the Y-axis positive direction, and is spaced apart from the second sliding groove 113. The first sliding groove 112 and the fourth sliding groove 115 are disposed at intervals and opposite to each other, and the second sliding groove 113 and the third sliding groove 114 are disposed at intervals and opposite to each other in the X-axis direction.

In addition, the shaft cover 11 is further provided with a mounting groove 116, and an opening of the mounting groove 116 is located on the top surface of the shaft cover 11. The mounting groove 116 is recessed in a direction from the top surface to the bottom surface of the shaft cover 11 (negative Z-axis direction in the drawing). Specifically, the mounting groove 116 is located on one side of the sliding groove 111 facing the negative Y-axis direction, and is spaced apart from the sliding groove 111. The mounting groove 116 includes two second groove sidewalls (not shown) and a groove bottom wall (not shown), and the two second groove sidewalls are disposed at intervals along the Y-axis direction, and the groove bottom wall is connected between the two second groove sidewalls. Each second slot sidewall is provided with a first mounting hole (not shown) and a second mounting hole (not shown), both extending in the Y-axis direction. The second mounting hole is located one side of the first mounting hole towards the positive direction of the X axis, and is arranged at intervals with the first mounting hole. The first mounting holes and the second mounting holes are round holes, the first mounting holes of the two second groove side walls are arranged on the same axis, and the second mounting holes of the two second groove side walls are arranged on the same axis.

The bottom wall of the mounting groove 116 is provided with a mounting projection (not shown) extending from the bottom wall of the mounting groove 116 in the direction of the top surface of the shaft cover 11 (in the positive direction of the Z-axis in the drawing). The mounting lug is provided with a first through hole (not shown) and a second through hole (not shown), and the first through hole and the second through hole penetrate through the mounting lug along the Y-axis direction. The second through hole is positioned at one side of the first through hole facing the positive direction of the X axis and is arranged at intervals with the first through hole. The first through hole and the second through hole are round holes, the first through hole and the first mounting hole are arranged on the same axis, and the second through hole and the second mounting hole are arranged on the same axis.

The first rotating shaft 12 and the second rotating shaft 13 are each mounted to the mounting groove 116 of the shaft cover 11. Specifically, the first rotating shaft 12 is disposed through the first through hole, and two end portions of the first rotating shaft 12 are respectively mounted in the two first mounting holes. The second rotating shaft 13 is arranged through the second through hole, and two end parts of the second rotating shaft 13 are respectively arranged in the two second mounting holes. The first rotating shaft 12 and the second rotating shaft 13 are circular shafts, the first rotating shaft 12 and the first mounting hole are coaxial, and the second rotating shaft 13 and the second mounting hole are coaxial.

Referring to fig. 9 and 10, fig. 9 is a schematic structural view of the connecting assembly 20 in the foldable mechanism 130 shown in fig. 7, and fig. 10 is a schematic structural view of the connecting assembly 20 shown in fig. 9 at another angle.

The first fixing frame 21 is provided with a mounting notch 211 and a first slide hole 212. The opening of the mounting notch 211 is located on the right side of the first fixing frame 21. The mounting notch 211 is recessed from the right side surface of the first fixing frame 21 to the left side surface (X-axis negative direction is shown) and penetrates the top and bottom surfaces of the first fixing frame 21. In other embodiments, the mounting notch 211 may not extend through the top surface of the first mount 21, and/or the mounting notch 211 may not extend through the top surface of the first mount 21.

The mounting notch 211 includes two side walls (not shown) disposed opposite each other and a bottom wall (not shown) connected between the two side walls. The bottom wall of the mounting notch 211 is provided with a mounting boss (not shown) which is located between the two side walls and is spaced from the two side walls. The mounting boss is provided with a through hole (not shown) penetrating the mounting boss in the Y-axis direction. The through hole is a round hole, and the axis of the through hole is parallel to the Y-axis direction. In other embodiments, the bottom wall of the mounting notch 211 may not be provided with a mounting boss.

In this embodiment, there are three mounting notches 211, and the three mounting notches 211 are a first mounting notch 213, a second mounting notch 214, and a third mounting notch 215, respectively. The second mounting notch 214 is located at one side of the first mounting notch 213 facing the negative Y-axis direction, and is spaced from the first mounting notch 213. The third mounting notch 215 is located at a side of the second mounting notch 214 away from the first mounting notch 213 and is spaced apart from the second mounting notch 214. In the second mounting notch 214 and the third mounting notch 215, the through holes of the mounting boss are elongated holes.

In addition, both sidewalls of the first mounting recess 213 are concavely provided with mounting holes (not shown). One mounting hole is recessed from one side wall of the first mounting notch 213 in the positive Y-axis direction, and the other mounting hole is recessed from the other side wall of the first mounting notch 213 in the negative Y-axis direction. Wherein, two mounting holes are the round hole, and the axle center of two mounting holes is all parallel to Y axle direction. Illustratively, both mounting holes are concentric with the through hole of the mounting boss.

The first sliding hole 212 is located between the second mounting notch 214 and the third mounting notch 215, and is spaced from the second mounting notch 214 and the third mounting notch 215. The opening of the first slide hole 212 is located on the right side of the first fixing frame 21. The first slide hole 212 is recessed from the right side surface of the first fixing frame 21 to the left side surface, and penetrates the left side surface of the first fixing frame 21. It should be understood that the first slide hole 212 is not limited to the illustrated square hole, but may be a round hole, a special-shaped hole, or the like. In other embodiments, the first sliding hole 212 may not penetrate the left side surface of the first fixing frame 21.

In this embodiment, the first main swing arm 23 includes a rotation portion 231, a connection portion 232, and a sliding portion 233, and the connection portion 232 is fixedly connected between the rotation portion 231 and the sliding portion 233. Wherein, the rotation part 231, the connection part 232, and the sliding part 233 may be integrally formed.

The structure of the rotating part 231 is matched with that of the first mounting notch 213. The rotating portion 231 includes two sub rotating portions 234, and the two sub rotating portions 234 are arranged at intervals in the Y-axis direction. Each of the sub-rotating portions 234 is provided with a through hole (not shown) penetrating the sub-rotating portion 234 in the Y-axis direction. Wherein, the through holes of the two sub-rotating parts 234 are all round holes, and the axes of the through holes are parallel to the Y-axis direction. Illustratively, the through holes of the two sub-rotating parts 234 are concentric.

In addition, the connecting assembly 20 further includes a first rotating shaft 271, where the first rotating shaft 271 penetrates through the through holes of the two sub-rotating portions 234 and the through holes of the mounting bosses in the first mounting notch 213, and two ends of the first rotating shaft 271 are respectively mounted in the mounting holes of the two side walls in the first mounting notch 213 and are respectively fixedly connected to the hole walls of the two mounting holes. In this embodiment, the first rotation shaft 271 is a circular shaft, and the axis of the first rotation shaft 271 is parallel to the Y-axis direction. Illustratively, the first shaft 271 is concentric with the through holes of the two sub-rotating portions 234, the through holes of the mounting bosses in the first mounting notch 213, and the mounting holes of the two side walls in the first mounting notch 213. The two sub rotating parts 234 can rotate relative to the first rotating shaft 271, so as to realize the rotation connection between the rotating part 231 and the first rotating shaft 271, thereby realizing the rotation connection between the rotating part 231 of the first main swing arm 23 and the first fixing frame 21, and further realizing the rotation connection between the first main swing arm 23 and the first fixing frame 21.

The connection portion 232 has a planar plate shape. Referring to fig. 8, the structure of the sliding portion 233 is adapted to the structure of the first sliding groove 112. Wherein, the bottom surface of the sliding portion 233 is an arc surface. The sliding portion 233 is provided with two sliding grooves 235, and an opening of each sliding groove 235 is located on the top surface of the sliding portion 233. Each of the sliding grooves 235 is recessed from the top surface of the sliding portion 233 toward the bottom surface (negative Z-axis direction is shown). One of the sliding grooves 235 is located at the front end of the sliding portion 233 and penetrates the front end surface of the sliding portion 233, and the other sliding groove 235 is located at the rear end of the sliding portion 233 and penetrates the rear end surface of the sliding portion 233. The sliding grooves 235 are arc grooves matched with the sliding blocks 14, the axes of the sliding grooves 235 are parallel to the Y-axis direction, and the two sliding grooves 235 are coaxial.

The two sliding blocks 14 in the first sliding groove 112 can slide and rotate in the two sliding grooves 235 in the sliding part 233 respectively, so that the sliding part 233 can slide and rotate in the first sliding groove 112 to realize sliding and rotating connection between the sliding part 233 of the first main swing arm 23 and the base 10, and further realize sliding and rotating connection between the first main swing arm 23 and the base 10. Wherein, two sliding grooves 235 of the sliding portion 233 are coaxial with two sliding blocks 14 of the first sliding groove 112.

In this embodiment, the first auxiliary swing arm 25 includes a sliding portion 251, a transition portion 252 and a rotating portion 253, and the transition portion 252 is fixedly connected between the sliding portion 251 and the rotating portion 253. Wherein, the sliding portion 251, the transition portion 252 and the rotating portion 253 may be integrally formed.

The structure of the sliding portion 251 is adapted to the structure of the second mounting notch 214. The sliding portion 251 includes two sub-sliding portions 254, and the two sub-sliding portions 254 are arranged at intervals in the Y-axis direction. Each sub-slider 254 is provided with a through hole (not shown) penetrating the sub-slider 254 in the Y-axis direction. Wherein, the through holes of the two sub-rotating parts 234 are all round holes, and the axes of the through holes are parallel to the Y-axis direction. Illustratively, the through holes of the two sub-rotating parts 234 are concentric.

In addition, the connecting assembly 20 further includes a first pin 281, where the first pin 281 is disposed through the through holes of the two sub-sliding portions 254 and the through holes of the mounting bosses in the second mounting notch 214, and is fixedly connected to the hole walls of the through holes of the two sub-sliding portions 254. In this embodiment, the first pin 281 is a circular shaft, and the axis of the first pin 281 is parallel to the Y-axis direction. Illustratively, the first pin 281 is concentric with the through holes of the two sub-sliders 254. The first pin 281 can slide and rotate in the through hole of the mounting boss in the second mounting notch 214 relative to the first fixing frame 21, so that the two sub-sliding portions 254 can slide and rotate relative to the first fixing frame 21, so as to realize sliding and rotating connection between the sliding portion 251 and the first fixing frame 21, and further realize sliding and rotating connection between the first auxiliary swing arm 25 and the first fixing frame 21.

The transition portion 252 has a planar plate shape. Referring to fig. 8, the structure of the rotating portion 253 is adapted to the structure of the third sliding groove 114. Wherein, the bottom surface of the rotating portion 253 is an arc surface. The rotating portion 253 is provided with two sliding grooves 255, and an opening of each sliding groove 255 is located on the top surface of the rotating portion 253. Each of the slide grooves 255 is recessed from the top surface of the rotating portion 253 toward the bottom surface (negative Z-axis direction shown). One chute 255 is located at the front end of the rotating portion 253 and penetrates the front end surface of the rotating portion 253, and the other chute 255 is located at the rear end of the rotating portion 253 and penetrates the rear end surface of the rotating portion 253. The sliding grooves 255 are arc grooves matched with the sliding blocks 14, the axes of the sliding grooves 255 are parallel to the Y-axis direction, and the two sliding grooves 255 are coaxial.

The two sliding blocks 14 in the third sliding groove 114 can slide and rotate in the two sliding grooves 255 in the rotating portion 253 respectively, so that the rotating portion 253 can slide and rotate in the third sliding groove 114 to realize sliding and rotating connection between the rotating portion 253 of the first auxiliary swing arm 25 and the base 10, and further realize sliding and rotating connection between the first auxiliary swing arm 25 and the base 10. Wherein, two sliding grooves 255 in the rotating portion 253 are coaxial with two sliding blocks 14 in the third sliding groove 114.

In the foldable mechanism 130 shown in the present application, when the first fixing frame 21 rotates relative to the base 10, the first main swing arm 23 is driven to rotate relative to the first fixing frame 21, slide and rotate relative to the base 10, and further drive the first auxiliary swing arm 25 to slide and rotate relative to the first fixing frame 21, and slide and rotate relative to the base 10.

The second fixing frame 22 is provided with three mounting notches 221 and a second sliding hole 222, and the three mounting notches 221 are a first mounting notch 223, a second mounting notch 224 and a third mounting notch 225 respectively. The second mounting notch 224 is located at a side of the first mounting notch 223 facing the Y-axis positive direction, and is spaced apart from the first mounting notch 223. The third mounting notch 225 is located at a side of the first mounting notch 223 facing away from the second mounting notch 224 and is spaced apart from the first mounting notch 223. The second sliding hole 222 is located between the first mounting notch 223 and the third mounting notch 225, and is spaced from both the first mounting notch 223 and the third mounting notch 225.

In this embodiment, the structures of the first mounting notch 223, the second mounting notch 224, the third mounting notch 225 and the second sliding hole 222 can be referred to the related descriptions of the first mounting notch 213, the second mounting notch 214, the third mounting notch 215 and the first sliding hole 212 in the first fixing frame 21, and are not repeated herein. Wherein, the openings of the mounting notch 221 and the second sliding hole 222 are both located on the left side surface of the second fixing frame 22.

The second main swing arm 24 includes a rotating portion 241, a connecting portion 242, and a sliding portion 243, and the connecting portion 242 is fixedly connected between the rotating portion 241 and the sliding portion 243. In the present embodiment, the structure of the second main swing arm 24 and the coordination relationship between the second main swing arm 24 and the second fixing frame 22 and the base 10 can be referred to the related description of the structure of the first main swing arm 23 and the coordination relationship between the first main swing arm 23 and the first fixing frame 21 and the base 10.

The structure of the rotating portion 241 is adapted to the structure of the first mounting notch 223. In addition, the connecting assembly 20 further includes a second rotating shaft 272, the structure of the second rotating shaft 272, the matching relationship between the second rotating shaft 272 and the rotating portion 241, and the matching relationship between the second rotating shaft 272 and the second fixing frame 22, reference may be made to the above description of the structure of the first rotating shaft 271, the matching relationship between the first rotating shaft 271 and the rotating portion 231, and the matching relationship between the first rotating shaft 271 and the first fixing frame 21, which will not be repeated herein. The two sub-rotating portions 244 of the rotating portion 241 can rotate relative to the second rotating shaft 272, so as to realize rotational connection between the rotating portion 241 and the second rotating shaft 272, and further realize rotational connection between the rotating portion 241 of the second main swing arm 24 and the second fixing frame 22, and further realize rotational connection between the second main swing arm 24 and the second fixing frame 22.

Referring to fig. 8, the structure of the sliding portion 243 is matched with the structure of the second sliding groove 113. The sliding portion 243 is provided with two sliding grooves 245. The two sliders 14 in the second sliding groove 113 can slide and rotate in the two sliding grooves 245 of the sliding portion 243, respectively, so that the sliding portion 243 can slide and rotate in the second sliding groove 113 to realize sliding and rotating connection between the second main swing arm 24 and the base 10. Wherein, two sliding grooves 245 in the sliding part 233 are coaxial with two sliding blocks 14 in the second sliding groove 113.

Referring to fig. 9 and 10, the second auxiliary swing arm 26 includes a sliding portion 261, a transition portion 262 and a rotating portion 263, and the transition portion 262 is fixedly connected between the sliding portion 261 and the rotating portion 263. In the present embodiment, the structure of the second auxiliary swing arm 26, the matching relationship between the second auxiliary swing arm 26 and the second fixing frame 22, and the matching relationship between the second auxiliary swing arm 26 and the base 10 can be referred to the related description of the structure of the first auxiliary swing arm 25, the matching relationship between the first auxiliary swing arm 25 and the first fixing frame 21, and the matching relationship between the first auxiliary swing arm 25 and the base 10.

The structure of the sliding portion 261 is adapted to the structure of the second mounting notch 224. In addition, the connection assembly 20 further includes a second pin 282, and the structure of the second pin 282, the mating relationship between the second pin 282 and the second fixing frame 22, and the mating relationship between the second pin 282 and the sliding portion 261 can be described with reference to the structure of the first pin 281, the mating relationship between the first pin 281 and the first fixing frame 21, and the mating relationship between the first pin 281 and the sliding portion 251. The second pin shaft 282 may slide and rotate in the through hole of the mounting boss in the second mounting notch 224 relative to the second fixing frame 22, so that the two sub-sliding portions 264 of the sliding portion 261 may slide and rotate relative to the second fixing frame 22, so as to realize sliding and rotating connection between the sliding portion 261 and the second fixing frame 22, and further realize sliding and rotating connection between the second auxiliary swing arm 26 and the second fixing frame 22.

Referring to fig. 8, the structure of the rotating portion 263 is matched with the structure of the fourth sliding groove 115. Wherein, the rotating portion 263 is provided with two sliding grooves 265. The two sliding blocks 14 in the fourth sliding groove 115 can slide and rotate in the two sliding grooves 265 in the rotating portion 263 respectively, so that the rotating portion 263 can slide and rotate in the fourth sliding groove 115 to realize sliding and rotating connection between the rotating portion 263 of the second auxiliary swing arm 26 and the base 10, and further realize sliding and rotating connection between the second auxiliary swing arm 26 and the base 10. Wherein, two sliding grooves 265 in the rotating portion 263 are coaxial with two sliding blocks 14 in the fourth sliding groove 115.

In the foldable mechanism 130 shown in the present application, when the second fixing frame 22 rotates relative to the base 10, the second main swing arm 24 is driven to rotate relative to the second fixing frame 22, slide and slide relative to the base 10, and the second auxiliary swing arm 26 is driven to slide and rotate relative to the second fixing frame 22 and rotate relative to the base 10.

Referring to fig. 8 and 11, fig. 11 is a schematic view of the damping assembly 30 in the foldable mechanism 130 shown in fig. 7.

The damper 31 includes two damper bodies 34, two first damper springs 35 and two second damper springs 36, and the two damper bodies 34, the two first damper springs 35 and the two second damper springs 36 are mounted to the mounting groove 116 of the shaft cover 11. In the Y-axis direction, two damper bodies 34 are spaced apart and disposed opposite to each other. Two first damping springs 35 and two second damping springs 36 are each mounted between the two damping bodies 34. In the X-axis direction, two second damper springs 36 are located on opposite sides of the two first damper springs 35.

Each damping body 34 is provided with two damping shaft portions 341 and two hinge portions 342. The two damping shaft portions 341 are disposed on a surface of one damping body 34 facing the other damping body 34, and are arranged in parallel and at intervals along the X-axis direction. Illustratively, both damping shaft portions 341 are circular shafts, and the central axes extend parallel to the Y-axis direction. The two hinge portions 342 are both provided on a surface of one damping body 34 facing away from the other damping body 34, and are respectively provided on opposite sides of the two damping shaft portions 341. Wherein each hinge 342 includes a hinge surface facing away from the damping body 34, the hinge surface of the hinge 342 includes a plurality of peaks and a plurality of valleys, and the plurality of peaks and the plurality of valleys are alternately arranged.

In addition, each damper body 34 is further provided with a first mounting hole 343 and a second mounting hole 344, the first mounting hole 343 and the second mounting hole 344 being located on opposite sides of the two damper shaft portions 341, respectively, in the X-axis direction. In the Y-axis direction, the first mounting hole 343 and the second mounting hole 344 each penetrate the damper body 34. Wherein the first and second mounting holes 343 and 344 penetrate through the two hinge portions 342, respectively.

The first rotating shaft 12 is inserted into the first mounting holes 343 of the two damping bodies 34, and the second rotating shaft 13 is inserted into the second mounting holes 344 of the two damping bodies 34, so that the two damping bodies 34 are mounted in the mounting groove 116. The two ends of each first damping spring 35 are respectively sleeved on the damping shaft portions 341 of the two damping bodies 34 and are propped against the two damping bodies 34, so that the two first damping springs 35 are installed between the two damping bodies 34. One second damping spring 36 is sleeved on the first rotating shaft 12 and abuts against the two damping bodies 34, and the other second damping spring 36 is sleeved on the second rotating shaft 13 and abuts against the two damping bodies 34, so that the two second damping springs 36 are installed between the two damping bodies 34.

The first damping swing arm 32 is sleeved on the first rotating shaft 12 and is hinged to both damping bodies 34. In this embodiment, the first damping swing arm 32 includes a rotating portion 321, a connecting portion 322 and a sliding portion 323, and the connecting portion 322 is fixedly connected between the rotating portion 321 and the sliding portion 323. Wherein, the rotating portion 321, the sliding portion 323 and the connecting portion 322 may be integrally formed.

The rotating portion 321 includes two sub rotating portions 324, and the two sub rotating portions 324 are arranged at intervals along the Y-axis direction. Each of the sub-rotating parts 324 includes a hinge surface facing the other sub-rotating part 324, and the hinge surface of each of the sub-rotating parts 324 includes a plurality of peaks and a plurality of valleys alternately arranged. Illustratively, the sub-rotating part 324 is generally cylindrical. Specifically, the two sub-rotating portions 324 are respectively sleeved on the first rotating shaft 12 and are respectively hinged to the hinge portions 342 of the two damping bodies 34, so as to realize the rotational connection between the rotating portion 321 and the damping member 31, and further realize the rotational connection between the first damping swing arm 32 and the damping member 31. Wherein the hinge surface of each sub-rotation portion 324 is hinged to the hinge surface of one hinge portion 342 of one damping body 34.

When the first damping swing arm 32 rotates relative to the base 10, the two sub-rotating portions 324 rotate relative to the base 10, the two sub-rotating portions 324 can press the two damping bodies 34 to make the two damping bodies 34 relatively close, the first damping spring 35 and the second damping spring 36 between the two damping bodies 34 deform to increase damping force, the two sub-rotating portions 324 can not press the two damping bodies 34 to make the two damping bodies 34 relatively far away, and the first damping spring 35 and the second damping spring 36 between the two damping bodies 34 can elastically recover to reduce damping force. In the process of folding or unfolding foldable terminal 1000, the user can feel the change of the damping force generated by damping assembly 30, and the user can experience better hand feeling, so that the use experience of the user is improved.

The slider 323 includes two sub-sliders 325, and the two sub-sliders 325 are arranged at intervals along the Y-axis direction. Each sub-slider 325 is provided with a through hole (not shown) penetrating the sub-slider 325 in the Y-axis direction. Wherein, the through holes of the two sub sliding parts 325 are all round holes, and the axes of the through holes are parallel to the Y-axis direction. Illustratively, the through holes of the two sub-slides 325 are concentric.

Referring to fig. 9 and 10 together, the damping assembly 30 further includes a first pin 37, where the first pin 37 is inserted through the through holes of the two sub-sliding portions 325 and the through holes of the mounting boss in the third mounting notch 215, and is fixedly connected to the hole walls of the through holes of the two sub-sliding portions 325. In this embodiment, the first pin 37 is a cylinder, and the axis of the first pin 37 is parallel to the Y-axis direction. Illustratively, the first pin 37 is concentric with the through holes of the two sub-slides 325. The first pin 37 can slide and rotate in the through hole of the mounting boss in the third mounting notch 215 relative to the first fixing frame 21, so that the two sub-sliding portions 325 can slide and rotate relative to the first fixing frame 21, so as to realize sliding and rotating connection between the sliding portion 323 and the first fixing frame 21, and further realize sliding and rotating connection between the first damping swing arm 32 and the first fixing frame 21.

The second damping swing arm 33 is sleeved on the second rotating shaft 13 and is hinged with the two damping bodies 34. The second damping swing arm 33 includes a rotating portion 331, a connecting portion 332, and a sliding portion 333, and the connecting portion 332 is fixedly connected between the rotating portion 331 and the sliding portion 333. In the present embodiment, the structure of the second damping swing arm 33, the matching relationship between the second damping swing arm 33 and the two damping bodies 34, the matching relationship between the second damping swing arm 33 and the second rotating shaft 13, and the matching relationship between the second damping swing arm 33 and the second fixing frame 22 can be described with reference to the structure of the first damping swing arm 32, the matching relationship between the first damping swing arm 32 and the two damping bodies 34, the matching relationship between the first damping swing arm 32 and the first rotating shaft 12, and the matching relationship between the first damping swing arm 32 and the first fixing frame 21.

Specifically, the two sub-rotating portions 334 of the rotating portion 331 are both sleeved on the second rotating shaft 13 and are respectively hinged to the hinge portions 342 of the two damping bodies 34, so as to realize rotational connection between the rotating portion 331 and the damping member 31, and further realize rotational connection between the second damping swing arm 33 and the damping member 31. Wherein the hinge surface of each sub-rotating portion 334 is hinged to the hinge surface of one hinge portion 342 of one damping body 34.

When the second damping swing arm 33 rotates relative to the base 10, the two sub-rotating portions 334 rotate relative to the base 10, the two sub-rotating portions 334 can press the two damping bodies 34 to make the two damping bodies 34 relatively close, the first damping spring 35 and the second damping spring 36 between the two damping bodies 34 deform to increase damping force, the two sub-rotating portions 334 can also not press the two damping bodies 34 to make the two damping bodies 34 relatively far away, and the first damping spring 35 and the second damping spring 36 between the two damping bodies 34 can elastically recover to reduce damping force. In the process of folding or unfolding foldable terminal 1000, the user can feel the change of the damping force generated by damping assembly 30, and the user can experience better hand feeling, so that the use experience of the user is improved.

In addition, the damping assembly 30 further includes a second pin 38, and the structure of the second pin 38, the mating relationship between the second pin 38 and the second mount 22, and the mating relationship between the second pin 38 and the sliding portion 333 can be referred to as the related description of the structure of the first pin 37, the mating relationship between the first pin 37 and the first mount 21, and the mating relationship between the first pin and the sliding portion 323. The second pin 38 can slide and rotate in the through hole of the mounting boss in the third mounting notch 225 relative to the second fixing frame 22, so that the two sub-sliding portions 335 of the sliding portion 333 can slide and rotate relative to the second fixing frame 22, so as to realize sliding and rotating connection between the sliding portion 333 and the second fixing frame 22, and further realize sliding and rotating connection between the second damping swing arm 33 and the second fixing frame 22.

When the connection assembly 20 is switched between the folded state and the flattened state, the first fixing frame 21 rotates relative to the base 10, and drives the first damping swing arm 32 to slide and rotate relative to the first fixing frame 21 and rotate relative to the base 10, and the second fixing frame 22 rotates relative to the base 10, and drives the second damping swing arm 33 to slide and rotate relative to the second fixing frame 22 and rotate relative to the base 10, so that the damping assembly 30 is switched between the folded state and the flattened state.

When the damping assembly 30 is folded from the folded state to the flattened state, in the first damping swing arm 32, the peak of the hinge surface in the sub-rotation portion 324 enters the trough of the hinge surface in the hinge portion 342, and at the same time, the peak of the hinge surface in the hinge portion 342 also enters the trough of the hinge surface in the sub-rotation portion 324, in the second damping swing arm 33, the peak of the hinge surface in the sub-rotation portion 334 enters the trough of the hinge surface in the hinge portion 342, and the peak of the front end surface in the hinge portion 342 enters the trough of the hinge surface in the sub-rotation portion 334. At this time, the damping force generated by the rotation of the first damping swing arm 32 relative to the base 10 is smaller, the damping force generated by the rotation of the second damping swing arm 33 relative to the base 10 is smaller, and the user can experience the hand feeling of being flattened to a proper position when using the foldable terminal 1000, which is helpful for improving the user experience.

Referring to fig. 8 and 12, fig. 12 is a schematic structural diagram of the synchronizing assembly 40 in the foldable mechanism 130 shown in fig. 7.

The synchronous slider 41 is mounted in the mounting groove 116 of the shaft cover 11, is sleeved on the first rotating shaft 12 and the second rotating shaft 13, and can slide relative to the first rotating shaft 12 and the second rotating shaft 13. The synchronous slide 41 comprises a first sliding surface 411 and a second sliding surface 412, and the first sliding surface 411 and the second sliding surface 412 are positioned on two opposite sides of the synchronous slide 41 and can rotate relative to the synchronous slide 41. Wherein, the first sliding surface 411 is located at a side of the synchronous slider 41 close to the first rotating shaft 12, and the second sliding surface 412 is located at a side of the synchronous slider 41 close to the second rotating shaft 13.

Specifically, the synchronizing slider 41 includes a slider 44 and a rolling member 45, and the rolling member 45 is mounted on the slider 44 and is rotatable relative to the slider 44. In this embodiment, the slider 44 is in the shape of an "I". The slider 44 includes two mounting portions 441 and a connecting portion 442, and the two mounting portions 441 are disposed opposite to each other at intervals along the Y-axis direction, and the connecting portion 442 is fixedly connected between the two mounting portions 441. Wherein the two mounting portions 441 and the connecting portion 442 may be integrally formed.

Each mounting portion 441 is provided with a first through hole (not shown) and a second through hole (not shown), which each penetrate the mounting portion 441 in the Y-axis direction. Specifically, the first through hole and the second through hole are located at opposite ends of the mounting portion 441, respectively, in the X-axis direction. The second through hole is positioned at one side of the first through hole facing the positive direction of the X axis.

The connection portion 442 is connected in the Y-axis direction between the middle portions of the two mounting portions 441. The connection portion 442 includes a first side surface (not shown) and a second side surface (not shown), which are disposed opposite to each other in the X-axis direction. The connection portion 442 is provided with a first mounting post (not shown) and a second mounting post (not shown). The first mounting column is arranged on the first side surface and extends from the first side surface to a direction away from the second side surface. The second mounting column is arranged on the second side surface and extends from the second side surface to a direction deviating from the first side surface. Wherein, first erection column and second erection column all have two, along Y axle direction, two first erection column interval arrangements, two second erection column interval arrangements. Illustratively, the first mounting post and the second mounting post are each cylindrical.

In the present embodiment, the width of the rolling member 45 is constant in the direction in which the rolling member 45 approaches the sliding member 44 toward the rolling member 45 away from the sliding member 44. Illustratively, the rolling member 45 is cylindrical. In other embodiments, the width of the rolling element 45 gradually increases along the direction that the rolling element 45 approaches the sliding element 44 and moves away from the rolling element 45 toward the sliding element 44, for example, the rolling element 45 may be in a truncated cone shape, or the outer surface of the rolling element 45 may be a spherical surface, for example, the rolling element 45 may be in a hollow semicircle sphere shape, and the structure of the rolling element 45 is not particularly limited herein.

The rolling elements 45 are four, and the four rolling elements 45 are two first rolling elements 46 and two second rolling elements 47, respectively. Two first rolling members 46 are mounted on one side of the slider 44 and are arranged at intervals in the Y-axis direction. Two second rolling members 47 are mounted on the other side of the slider 44 and are arranged at intervals in the Y-axis direction. Specifically, each first rolling element 46 is sleeved on one first mounting column, and can rotate relative to the first mounting column, and each second rolling element 47 is sleeved on one second mounting column, and can rotate relative to the second mounting column. Wherein the outer surfaces 461 of the two first rolling members 46 form a first sliding surface 411 and the outer surfaces 471 of the two second rolling members 47 form a second sliding surface 412.

The first synchronization swing arm 42 is sleeved on the first rotating shaft 12 and is slidably connected with two first rolling members 46. In this embodiment, the first synchronization swing arm 42 includes a rotation portion 421, a connection portion 422, and a sliding portion 423, and the connection portion 422 is fixedly connected between the rotation portion 421 and the sliding portion 423. Wherein, the rotation portion 421, the connection portion 422 and the sliding portion 423 may be integrally formed.

The rotating portion 421 is sleeved on the first rotating shaft 12 and can rotate relative to the base 10. The rotation center of the rotation portion 421 is the axial center of the first rotation shaft 12. The rotating portion 421 includes a first spiral surface 4211, and the first spiral surface 4211 is spirally provided around a rotation center of the rotating portion 421. In this embodiment, the rotating portion 421 is provided with a first spiral protrusion 424, the first spiral protrusion 424 is protruded on the peripheral surface of the rotating portion 421, and the spiral is disposed around the rotation center of the rotating portion 421. The first screw boss 424 includes two first screw sides 425, and the two first screw sides 425 are disposed opposite to each other in the Y-axis direction. Wherein the two first spiral sides 425 form a first spiral 4211.

In this embodiment, the first spiral protrusion 424 is slidably connected between the two first rolling members 46, so as to achieve the sliding connection between the rotating portion 421 and the synchronization slider 41, and thus achieve the sliding connection between the first synchronization swing arm 42 and the synchronization slider 41. Specifically, the first spiral surface 4211 is in contact with the first sliding surface 411. Wherein the two first helical sides 425 are in contact with the outer surfaces 461 of the two first rolling members 46, respectively. It should be noted that the profile curve of the first spiral protrusion 424 after being unfolded may be set according to the actual requirement, and may be a diagonal line, a parabola, a cosine curve, or the like.

When the first synchronization swing arm 42 rotates relative to the base 10, the rotating portion 421 rotates relative to the base 10, the first spiral protrusion 424 slides relative to the two first rolling members 46, and the first spiral surface 4211 slides relative to the first sliding surface 411, so that not only can the two first rolling members 46 be driven to rotate relative to the sliding member 44, but also the sliding member 44 can be driven to move relative to the first rotating shaft 12 and the second rotating shaft 13 along the Y-axis direction, so as to drive the synchronization slider 41 to move relative to the first rotating shaft 12 and the second rotating shaft 13 along the Y-axis direction, and further realize sliding connection between the synchronization slider 41 and the base 10.

Referring to fig. 9 and 10, the structure of the sliding portion 423 is adapted to the structure of the first sliding hole 212 of the first fixing frame 21. The sliding portion 423 has a planar shape. The sliding portion 423 may be disposed through the first sliding hole 212 and may slide relative to the first fixing frame 21 in the first sliding hole 212, so as to realize sliding connection between the sliding portion 423 and the first fixing frame 21, and further realize sliding connection between the first synchronization swing arm 42 and the first fixing frame 21.

The second synchronous swing arm 43 is sleeved on the second rotating shaft 13 and is in sliding connection with the two second rolling pieces 47. The second synchronization swing arm 43 includes a rotation portion 431, a connection portion 432, and a sliding portion 433, and the connection portion 432 is fixedly connected between the rotation portion 431 and the sliding portion 433. In the present embodiment, the structure of the second swing arm 43, the matching relationship between the second swing arm 43 and the swing block 41, and the matching relationship between the second swing arm 43 and the second fixing frame 22 can be referred to as the structure of the first swing arm 42, the matching relationship between the first swing arm 42 and the swing block 41, and the matching relationship between the first swing arm 42 and the first fixing frame 21.

Specifically, the rotating portion 431 is sleeved on the second rotating shaft 13 and can rotate relative to the base 10. The rotating portion 431 includes a second spiral surface 4311, and the second spiral surface 4311 is spirally disposed around a rotation center of the rotating portion 431. In this embodiment, the rotating portion 431 is provided with a second spiral protrusion 434, and the second spiral protrusion 434 is protruding on the peripheral surface of the rotating portion 431 and is disposed around the rotation center of the rotating portion 431. The second spiral protrusion 434 includes two second spiral sides 435, and the two second spiral sides 435 are disposed opposite to each other in the Y-axis direction. Wherein the two second flanks 435 form a second flank 4311.

The second spiral protrusion 434 of the rotating part 431 is slidably connected between the two second rolling members 47 to achieve a sliding connection between the rotating part 431 and the synchronizing slider 41, thereby achieving a sliding connection between the second synchronizing swing arm 43 and the synchronizing slider 41. Specifically, the second helicoid 4311 is in contact with the second sliding surface 412. Wherein the two second spiral sides 435 of the second spiral protrusion 434 are respectively in contact with the outer surfaces 471 of the two second rolling members 47.

When the second synchronization swing arm 43 rotates relative to the base 10, the rotating portion 431 rotates relative to the base 10, the second spiral protrusion 434 slides relative to the two second rolling elements 47, and the second spiral surface 4311 slides relative to the second sliding surface 412, so that not only can the two second rolling elements 47 be driven to rotate relative to the sliding element 44, but also the sliding element 44 can be driven to move relative to the first rotating shaft 12 and the second rotating shaft 13 along the Y-axis direction, so as to drive the synchronization slider 41 to move relative to the first rotating shaft 12 and the second rotating shaft 13 along the Y-axis direction, and further realize sliding connection between the synchronization slider 41 and the base 10.

The sliding portion 433 has a structure adapted to that of the second sliding hole 222 of the second fixing frame 22. The sliding portion 433 can penetrate through the second sliding hole 222 and can slide in the second sliding hole 222 relative to the second fixing frame 22, so as to realize sliding connection between the sliding portion 433 and the second fixing frame 22, and further realize sliding connection between the second synchronous swing arm 43 and the second fixing frame 22.

When the first fixing frame 21 rotates relative to the base 10, the first fixing frame 21 drives the first synchronous swing arm 42 to slide relative to the first fixing frame 21 and rotate relative to the base 10, the first spiral protrusion 424 of the rotating portion 421 in the first synchronous swing arm 42 slides relative to the two first rolling members 46 of the synchronous slide 41, the first spiral protrusion 424 can drive the two first rolling members 46 to rotate relative to the sliding member 44, and can also drive the sliding member 44 to move relative to the first rotating shaft 12 and the second rotating shaft 13 along the Y axis direction, so as to drive the synchronous slide 41 to move relative to the first rotating shaft 12 and the second rotating shaft 13 along the Y axis direction, and the synchronous slide 41 drives the two second rolling members 47 to slide relative to the second spiral protrusion 434 of the rotating portion 431 of the second synchronous swing arm 43, so as to drive the second synchronous swing arm 43 to rotate relative to the base 10 and further drive the second fixing frame 22 to rotate relative to the base 10, so as to realize synchronous rotation between the first fixing frame 21 and the second fixing frame 22 in the foldable mechanism 130.

Similarly, when the second fixing frame 22 rotates relative to the base 10, the second fixing frame 22 drives the second synchronous swing arm 43 to slide relative to the second fixing frame 22 and rotate relative to the base 10, the second spiral protrusion 434 of the rotating portion 431 of the second synchronous swing arm 43 slides relative to the two second rolling members 47 of the synchronous slide 41, the second spiral protrusion 434 can drive the two second rolling members 47 to rotate relative to the sliding member 44, and can also drive the sliding member 44 to move relative to the first rotating shaft 12 and the second rotating shaft 13 along the Y axis direction, so as to drive the synchronous slide 41 to move relative to the first rotating shaft 12 and the second rotating shaft 13 along the Y axis direction, and the synchronous slide 41 drives the two first rolling members 46 to slide relative to the first spiral protrusion 424 of the rotating portion 421 of the first synchronous swing arm 42, so as to drive the first synchronous swing arm 42 to rotate relative to the base 10 and further drive the first fixing frame 21 to rotate relative to the base 10, so as to realize synchronous rotation between the first fixing frame 21 and the second fixing frame 22 in the foldable mechanism 130.

The synchronous assembly 40 of the foldable mechanism 130 in this embodiment uses the rolling member 45 of the synchronous slider 41, the first spiral protrusion 424 of the first synchronous swing arm 42 and the second spiral protrusion 434 of the second synchronous swing arm 43 to form a cam pair, and converts the rotation of the first synchronous swing arm 42 and the second synchronous swing arm 43 relative to the base 10 into the linear movement of the synchronous slider 41 relative to the base 10, so as to realize the synchronous rotation of the foldable mechanism 130.

Compared with the existing synchronous assembly which adopts the spiral pair formed by the convex part and the spiral groove to realize synchronous rotation, in the synchronous assembly 40 shown in the embodiment, the rolling element 45 can rotate relative to the sliding element 44, the rolling element 45 can convert the existing sliding friction into moving friction, so that the abrasion between the first rolling element 46 and the first spiral bulge 424 of the first synchronous swing arm 42 and the abrasion between the second rolling element 47 and the second spiral bulge 434 of the second synchronous swing arm 43 are reduced, and the synchronous precision of the synchronous assembly 40 is guaranteed. Moreover, the rolling member 45 is simple in structure, convenient to process, easy to detect preparation errors, and beneficial to reducing assembly difficulty and preparation cost of the synchronous assembly 40. It can be appreciated that by selecting rolling members 45 of different sizes and adjusting the gaps between adjacent rolling members 45, not only the transmission accuracy of the synchronization assembly 40 can be controlled, but also the processing errors of the first spiral protrusion 424 of the first synchronization swing arm 42 and the second spiral protrusion 434 of the second synchronization swing arm 43 can be compensated, the manufacturing loss of the synchronization assembly 40 can be reduced, and the processing economy of the synchronization assembly 40 can be improved.

Referring to fig. 4, 5 and 9, the first fixing frame 21 is fixedly connected to the first housing 110, and the second fixing frame 22 is fixedly connected to the second housing 120. For example, the first fixing frame 21 may be fixedly connected to the first housing 110 by a fastener such as a screw or a bolt, and the second fixing frame 22 may be fixedly connected to the second housing 120 by a fastener such as a screw or a bolt.

In the foldable mechanism 130 adopted in the foldable terminal 1000 in this embodiment, the rolling member 45 of the synchronous slider 41, the first spiral protrusion 424 of the first synchronous swing arm 42 and the second spiral protrusion 434 of the second synchronous swing arm 43 form a cam pair, so that the rotation of the first synchronous swing arm 42 and the second synchronous swing arm 43 relative to the base 10 is converted into the linear movement of the synchronous slider 41 relative to the base 10, thereby realizing the synchronous rotation of the foldable mechanism 130.

Referring to fig. 13, fig. 13 is a schematic structural diagram of a synchronization assembly 40 of a foldable mechanism in a second foldable terminal according to an embodiment of the present application.

The synchronizing assembly 40 of the present embodiment differs from the first synchronizing assembly 40 described above in that the slider 44 is provided with a first mounting post and a second mounting post (not shown). The two rolling elements 45 are respectively a first rolling element 46 and a second rolling element 47, the first rolling element 46 is arranged on one side of the sliding element 44 and can rotate relative to the sliding element 44, and the second rolling element 47 is arranged on the other side of the sliding element 44 and can rotate relative to the sliding element 44. Specifically, the first rolling element 46 is sleeved on the first mounting post and can rotate relative to the first mounting post, and the second rolling element 47 is sleeved on the second mounting post and can rotate relative to the second mounting post. Wherein the outer surface 461 of the first rolling member 46 forms a first sliding surface 411 and the outer surface 471 of the second rolling member 47 forms a second sliding surface 412.

The rotating portion 421 of the first synchronization swing arm 42 is provided with a first spiral groove 426, an opening of the first spiral groove 426 is located on the circumferential surface of the rotating portion 421, and the first spiral groove 426 is spirally disposed around the rotation center of the rotating portion 421. In this embodiment, the groove wall surface of the first spiral groove 426 forms a first spiral surface 4211. Specifically, the first spiral groove 426 includes two spiral wall surfaces 427, and the two spiral wall surfaces 427 are spaced apart and disposed opposite to each other along the Y-axis direction. Wherein the two spiral walls 427 form a first spiral 4211.

Specifically, the first rolling element 46 is mounted on the first spiral groove 426 of the rotating portion 421, and can slide in the first spiral groove 426 relative to the rotating portion 421, so as to realize sliding connection between the synchronous slider 41 and the rotating portion 421, thereby realizing sliding connection between the synchronous slider 41 and the first synchronous swing arm 42. Wherein the outer surface 461 of the first roller 46 is in contact with two helical wall surfaces 427. It should be noted that, the profile curve of the first spiral groove 426 after being expanded may be set according to the actual requirement, and may be a diagonal line, a parabola, a cosine curve, or the like.

When the first synchronization swing arm 42 rotates relative to the base 10, the rotating portion 421 rotates relative to the base 10, the first rolling member 46 slides in the first spiral groove 426 relative to the rotating portion 421 and rotates relative to the sliding member 44, and the first rolling member 46 can drive the sliding member 44 to move along the Y-axis direction relative to the first rotating shaft 12 and the second rotating shaft 13, so as to drive the synchronization slider 41 to move along the Y-axis direction relative to the first rotating shaft 12 and the second rotating shaft 13, and further realize sliding connection between the synchronization slider 41 and the base 10.

The rotation portion 431 of the second synchronization swing arm 43 is provided with a second spiral groove 436, an opening of the second spiral groove 436 is located on the circumferential surface of the rotation portion 431, and the second spiral groove 436 is spirally disposed around the rotation center of the rotation portion 431. In this embodiment, the groove wall surface of the second spiral groove 436 forms a second spiral surface 4311. Specifically, the second spiral groove 436 includes two spiral wall surfaces 437, and the two spiral wall surfaces 437 are spaced apart and disposed opposite each other in the Y-axis direction. Wherein the two spiral wall surfaces 437 form a second spiral surface 4311.

Specifically, the second rolling member 47 is mounted on the second spiral groove 436 of the rotating portion 431, and slides in the second spiral groove 436 relative to the rotating portion 431 to achieve sliding connection between the synchronous slider 41 and the rotating portion 431, thereby achieving sliding connection between the synchronous slider 41 and the second synchronous swing arm 43. Wherein the outer surface 471 of the second rolling member 47 is in contact with the two helical wall surfaces 437. It should be noted that the profile curve of the second spiral groove 436 after being expanded may be set according to the actual requirement, and may be a diagonal line, a parabola, a cosine curve, or the like.

When the second synchronization swing arm 43 rotates relative to the base 10, the rotating portion 431 rotates relative to the base 10, the second rolling member 47 slides in the second spiral groove 436 relative to the rotating portion 431 and rotates relative to the sliding member 44, and the second rolling member 47 can drive the sliding member 44 to move along the Y-axis direction relative to the first rotating shaft 12 and the second rotating shaft 13, so as to drive the synchronization slider 41 to move along the Y-axis direction relative to the first rotating shaft 12 and the second rotating shaft 13, and further realize sliding connection between the synchronization slider 41 and the base 10.

When the first fixing frame 21 rotates relative to the base 10, the first fixing frame 21 drives the first synchronization swing arm 42 to slide relative to the first fixing frame 21 and rotate relative to the base 10, the first rolling element 46 slides in the first spiral groove 426 of the rotating portion 421 in the first synchronization swing arm 42 relative to the rotating portion 421, the first rolling element 46 can rotate relative to the sliding element 44 and can also drive the sliding element 44 to move relative to the first rotating shaft 12 and the second rotating shaft 13 along the Y axis direction, so that the synchronization slider 41 is driven to move relative to the first rotating shaft 12 and the second rotating shaft 13 along the Y axis direction, and the synchronization slider 41 drives the second rolling element 47 to rotate relative to the rotating portion 431 in the second spiral groove 436 of the rotating portion 431 in the second synchronization swing arm 43, so that the second synchronization swing arm 43 is driven to rotate relative to the base 10 and the second fixing frame 22 is driven to rotate relative to the base 10, so as to realize synchronous rotation between the first fixing frame 21 and the second fixing frame 22 in the foldable mechanism 130.

Similarly, when the second fixing frame 22 rotates relative to the base 10, the second fixing frame 22 drives the second synchronization swing arm 43 to slide relative to the second fixing frame 22 and rotate relative to the base 10, the second rolling member 47 slides in the second spiral groove 436 of the rotating portion 431 in the second synchronization swing arm 43 relative to the rotating portion 431, and the second rolling member 47 can rotate relative to the sliding member 44 and also drive the sliding member 44 to move along the Y axis direction relative to the first rotating shaft 12 and the second rotating shaft 13, so as to drive the synchronization slider 41 to move along the Y axis direction relative to the first rotating shaft 12 and the second rotating shaft 13, and the synchronization slider 41 drives the first rolling member 46 to slide relative to the rotating portion 421 in the first spiral groove 426 of the rotating portion 421 in the first synchronization swing arm 42, so as to drive the first synchronization swing arm 42 to rotate relative to the base 10 and drive the first fixing frame 21 to rotate relative to the base 10, so as to realize the synchronization rotation between the first fixing frame 21 and the second fixing frame 22 in the foldable mechanism 130.

The synchronous assembly 40 of the foldable mechanism 130 in this embodiment uses the rolling member 45 of the synchronous slider 41, the first spiral groove 426 of the first synchronous swing arm 42 and the second spiral groove 436 of the second synchronous swing arm 43 to form a cam pair, and converts the rotation of the first synchronous swing arm 42 and the second synchronous swing arm 43 relative to the base 10 into the linear movement of the synchronous slider 41 relative to the base 10, so as to realize the synchronous rotation of the foldable mechanism 130.

The foregoing description is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and should be covered in the scope of the present application; embodiments of the present application and features of embodiments may be combined with each other without conflict. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A foldable mechanism, characterized in that it comprises a base, a synchronous slider, a first fixed frame, a second fixed frame, a first synchronous swing arm and a second synchronous swing arm;

The base includes a shaft cover, a first rotating shaft and a second rotating shaft, the shaft cover is provided with a mounting groove, the first rotating shaft and the second rotating shaft are both mounted in the mounting groove and are spaced apart from each other;

The synchronous slider comprises a sliding member, a first rolling member and a second rolling member, the sliding member is installed in the installation groove, and is sleeved on the first rotating shaft and the second rotating shaft, and can slide relative to the first rotating shaft and the second rotating shaft, the sliding member is provided with a first mounting post and a second mounting post, the first mounting post and the second mounting post are respectively located at opposite sides of the sliding member, the first rolling member is sleeved on the first mounting post, and can rotate relative to the first mounting post, the outer surface of the first rolling member forms a first sliding surface, the first sliding surface is located on the side of the synchronous slider close to the first rotating shaft, the second rolling member is sleeved on the second mounting post, and can rotate relative to the second mounting post, the outer surface of the first rolling member forms a second sliding surface, and the second sliding surface is located on the side of the synchronous slider facing the second rotating shaft;

The first fixing frame is provided with a first sliding hole, and the second fixing frame is provided with a second sliding hole;

The rotating part of the first synchronous swing arm is sleeved on the first rotating shaft and can rotate relative to the first rotating shaft and is slidably connected to the synchronous slider. The rotation center of the rotating part of the first synchronous swing arm is the axis of the first rotating shaft. The rotating part of the first synchronous swing arm includes a first helical surface. The first helical surface is spirally arranged around the rotation center of the rotating part of the first synchronous swing arm and contacts the first sliding surface. The sliding part of the first synchronous swing arm is penetrated by the first sliding hole and can slide relative to the first fixed frame in the first sliding hole. The connecting part of the first synchronous swing arm is fixedly connected between the rotating part of the first synchronous swing arm and the sliding part of the first synchronous swing arm.

The rotating part of the second synchronous swing arm is sleeved on the second rotating shaft and can rotate relative to the second rotating shaft and is slidably connected to the synchronous slider. The rotation center of the rotating part of the second synchronous swing arm is the axis of the second rotating shaft. The rotating part of the second synchronous swing arm includes a second helical surface. The second helical surface is spirally arranged around the rotation center of the rotating part of the second synchronous swing arm and contacts the second sliding surface. The sliding part of the second synchronous swing arm is penetrated by the second sliding hole and can slide relative to the second fixed frame in the second sliding hole. The connecting part of the second synchronous swing arm is fixedly connected between the rotating part of the second synchronous swing arm and the sliding part of the second synchronous swing arm.

Wherein, a rotation direction of the rotating part of the first synchronous swing arm relative to the base is opposite to a rotation direction of the rotating part of the second synchronous swing arm relative to the base.

2. The foldable mechanism according to claim 1, wherein the first mounting post and the first rolling member each have one;

The rotating part of the first synchronous swing arm is provided with a first spiral groove, the first spiral groove is arranged spirally around the rotation center of the rotating part of the first synchronous swing arm, and the groove wall surface of the first spiral groove forms the first spiral surface;

Wherein, the first rolling element is slidably mounted on the first spiral groove.

3. The foldable mechanism according to claim 1, characterized in that there are two first mounting posts and two first rolling members, the two first mounting posts are spaced apart and arranged on one side of the sliding member, the two first rolling members are respectively sleeved on the two first mounting posts, and the outer surfaces of the two first rolling members form the first sliding surface;

The rotating part of the first synchronous swing arm is provided with a first spiral protrusion, the first spiral protrusion is arranged spirally around the rotation center of the rotating part of the first synchronous swing arm, the first spiral protrusion includes two first spiral side surfaces, the two first spiral side surfaces are arranged opposite to each other, and the two first spiral side surfaces form the first spiral surface;

Wherein, the first spiral protrusion is slidably connected between the two first rolling elements, and the two first spiral side surfaces are respectively in contact with the outer surfaces of the two first rolling elements.

4. The foldable mechanism according to claim 2 or 3, characterized in that the second mounting post and the second rolling member each have one;

The rotating part of the second synchronous swing arm is provided with a second spiral groove, the second spiral groove is arranged spirally around the rotation center of the rotating part of the second synchronous swing arm, and the groove wall surface of the second spiral groove forms the second spiral surface;

Wherein, the second rolling element is slidably mounted on the second spiral groove.

5. The foldable mechanism according to claim 2 or 3, characterized in that there are two of each of the second mounting posts and the second rolling element, the two second mounting posts are spaced apart at the other side of the sliding element, the two second rolling elements are respectively sleeved on the two second mounting posts, and the outer surfaces of the two second rolling elements form the second sliding surface;

The rotating part of the second synchronous swing arm is provided with a second spiral protrusion, the second spiral protrusion is spirally arranged around the rotation center of the rotating part of the second synchronous swing arm, the second spiral protrusion includes two second spiral side surfaces, the two second spiral side surfaces are arranged opposite to each other, and the two second spiral side surfaces form the second spiral surface;

Wherein, the second spiral protrusion is slidably connected between the two second rolling elements, and the two second spiral side surfaces are respectively in contact with the outer surfaces of the two second rolling elements.

6. The foldable mechanism according to claim 2 or 3, characterized in that the width of the first rolling member remains unchanged in the direction from the first rolling member approaching the sliding member to the direction from the first rolling member away from the sliding member;

Alternatively, the width of the first rolling member gradually increases along a direction from the first rolling member approaching the sliding member to the direction from the first rolling member away from the sliding member;

Alternatively, the outer surface of the first rolling element is a spherical surface.

7. The foldable mechanism according to claim 4, characterized in that the width of the first rolling member remains unchanged in the direction from the first rolling member approaching the sliding member to the direction from the first rolling member away from the sliding member;

8. The foldable mechanism according to claim 5, characterized in that the width of the first rolling member remains unchanged in the direction from the first rolling member approaching the sliding member to the direction from the first rolling member away from the sliding member;

9. The foldable mechanism according to any one of claims 1 to 3, 7 and 8, characterized in that when the rotating portion of the first synchronous swing arm rotates relative to the base, the first helical surface slides relative to the first sliding surface, the rotating portion of the first synchronous swing arm drives the synchronous slider to slide relative to the base, the second sliding surface slides relative to the second helical surface, and the synchronous slider drives the rotating portion of the second synchronous swing arm to rotate relative to the base;

When the rotating part of the second synchronous swing arm rotates relative to the base, the second helical surface slides relative to the second sliding surface, the rotating part of the second synchronous swing arm drives the synchronous slider to slide relative to the base, the first sliding surface slides relative to the first helical surface, and the synchronous slider drives the rotating part of the first synchronous swing arm to rotate relative to the base.

10. The foldable mechanism according to claim 4, characterized in that when the rotating portion of the first synchronous swing arm rotates relative to the base, the first helical surface slides relative to the first sliding surface, the rotating portion of the first synchronous swing arm drives the synchronous slider to slide relative to the base, the second sliding surface slides relative to the second helical surface, and the synchronous slider drives the rotating portion of the second synchronous swing arm to rotate relative to the base;

11. The foldable mechanism according to claim 5, characterized in that when the rotating portion of the first synchronous swing arm rotates relative to the base, the first helical surface slides relative to the first sliding surface, the rotating portion of the first synchronous swing arm drives the synchronous slider to slide relative to the base, the second sliding surface slides relative to the second helical surface, and the synchronous slider drives the rotating portion of the second synchronous swing arm to rotate relative to the base;

12. The foldable mechanism according to claim 6, characterized in that when the rotating portion of the first synchronous swing arm rotates relative to the base, the first helical surface slides relative to the first sliding surface, the rotating portion of the first synchronous swing arm drives the synchronous sliding block to slide relative to the base, the second sliding surface slides relative to the second helical surface, and the synchronous sliding block drives the rotating portion of the second synchronous swing arm to rotate relative to the base;

13. The foldable mechanism according to claim 1, characterized in that the foldable mechanism further comprises a first main swing arm, a first auxiliary swing arm, a second main swing arm and a second auxiliary swing arm;

The rotating part of the first main swing arm is rotatably connected to the first fixing frame, the sliding part of the first main swing arm is slidably and rotatably connected to the base, the sliding part of the first auxiliary swing arm is slidably connected to the first fixing frame, and the rotating part of the first auxiliary swing arm is rotatably connected to the base;

The rotating part of the second main swing arm is rotatably connected to the second fixed frame, the sliding part of the second main swing arm is slidably and rotatably connected to the base, the sliding part of the second auxiliary swing arm is slidably connected to the second fixed frame, and the rotating part of the second auxiliary swing arm is rotatably connected to the base.

14. The foldable mechanism according to claim 13 is characterized in that the sliding part of the first auxiliary swing arm is also rotationally connected to the first fixed frame, the rotating part of the first auxiliary swing arm is also slidingly connected to the base, the sliding part of the second auxiliary swing arm is also rotationally connected to the second fixed frame, and the rotating part of the second auxiliary swing arm is also slidingly connected to the base.

15. The foldable mechanism according to claim 13 or 14 is characterized in that the foldable mechanism also includes a damping member, a first damping swing arm and a second damping swing arm, the damping member is installed on the base, the rotating portion of the first damping swing arm is rotatably connected to the damping member, the sliding portion of the first damping swing arm is slidably and rotatably connected to the first fixed frame, the rotating portion of the second damping swing arm is rotatably connected to the damping member, and the sliding portion of the second damping swing arm is slidably and rotatably connected to the second fixed frame.

16. A foldable terminal, characterized by a first shell, a second shell and a foldable mechanism as claimed in any one of claims 1 to 15, wherein the first fixing frame is fixedly connected to the first shell, and the second fixing frame is fixedly connected to the second shell.

17. The foldable terminal according to claim 16 is characterized in that the foldable terminal also includes a display screen, the display screen includes a first display part, a second display part and a foldable part, the foldable part is connected between the first display part and the second display part, the first display part is installed on the first shell, the second display part is installed on the second shell, and the foldable part is arranged opposite to the foldable mechanism.